/*!
 * ngImgCrop v0.3.2
 * https://github.com/alexk111/ngImgCrop
 *
 * Copyright (c) 2014 Alex Kaul
 * License: MIT
 *
 * Generated at Wednesday, December 3rd, 2014, 3:54:12 PM
 */
(function() {
  'use strict';
  
  var crop = angular.module('xianwan');
  
  crop.factory('cropAreaCircle', ['cropArea', function(CropArea) {
    var CropAreaCircle = function() {
      CropArea.apply(this, arguments);
  
      this._boxResizeBaseSize = 20;
      this._boxResizeNormalRatio = 0.9;
      this._boxResizeHoverRatio = 1.2;
      this._iconMoveNormalRatio = 0.9;
      this._iconMoveHoverRatio = 1.2;
  
      this._boxResizeNormalSize = this._boxResizeBaseSize*this._boxResizeNormalRatio;
      this._boxResizeHoverSize = this._boxResizeBaseSize*this._boxResizeHoverRatio;
  
      this._posDragStartX=0;
      this._posDragStartY=0;
      this._posResizeStartX=0;
      this._posResizeStartY=0;
      this._posResizeStartSize=0;
  
      this._boxResizeIsHover = false;
      this._areaIsHover = false;
      this._boxResizeIsDragging = false;
      this._areaIsDragging = false;
    };
  
    CropAreaCircle.prototype = new CropArea();
  
    CropAreaCircle.prototype._calcCirclePerimeterCoords=function(angleDegrees) {
      var hSize=this._size/2;
      var angleRadians=angleDegrees * (Math.PI / 180),
          circlePerimeterX=this._x + hSize * Math.cos(angleRadians),
          circlePerimeterY=this._y + hSize * Math.sin(angleRadians);
      return [circlePerimeterX, circlePerimeterY];
    };
  
    CropAreaCircle.prototype._calcResizeIconCenterCoords=function() {
      return this._calcCirclePerimeterCoords(-45);
    };
  
    CropAreaCircle.prototype._isCoordWithinArea=function(coord) {
      return Math.sqrt((coord[0]-this._x)*(coord[0]-this._x) + (coord[1]-this._y)*(coord[1]-this._y)) < this._size/2;
    };
    CropAreaCircle.prototype._isCoordWithinBoxResize=function(coord) {
      var resizeIconCenterCoords=this._calcResizeIconCenterCoords();
      var hSize=this._boxResizeHoverSize/2;
      return(coord[0] > resizeIconCenterCoords[0] - hSize && coord[0] < resizeIconCenterCoords[0] + hSize &&
             coord[1] > resizeIconCenterCoords[1] - hSize && coord[1] < resizeIconCenterCoords[1] + hSize);
    };
  
    CropAreaCircle.prototype._drawArea=function(ctx,centerCoords,size){
      ctx.arc(centerCoords[0],centerCoords[1],size/2,0,2*Math.PI);
    };
  
    CropAreaCircle.prototype.draw=function() {
      CropArea.prototype.draw.apply(this, arguments);
  
      // draw move icon
      this._cropCanvas.drawIconMove([this._x,this._y], this._areaIsHover?this._iconMoveHoverRatio:this._iconMoveNormalRatio);
  
      // draw resize cubes
      this._cropCanvas.drawIconResizeBoxNESW(this._calcResizeIconCenterCoords(), this._boxResizeBaseSize, this._boxResizeIsHover?this._boxResizeHoverRatio:this._boxResizeNormalRatio);
    };
  
    CropAreaCircle.prototype.processMouseMove=function(mouseCurX, mouseCurY) {
      var cursor='default';
      var res=false;
  
      this._boxResizeIsHover = false;
      this._areaIsHover = false;
  
      if (this._areaIsDragging) {
        this._x = mouseCurX - this._posDragStartX;
        this._y = mouseCurY - this._posDragStartY;
        this._areaIsHover = true;
        cursor='move';
        res=true;
        this._events.trigger('area-move');
      } else if (this._boxResizeIsDragging) {
          cursor = 'nesw-resize';
          var iFR, iFX, iFY;
          iFX = mouseCurX - this._posResizeStartX;
          iFY = this._posResizeStartY - mouseCurY;
          if(iFX>iFY) {
            iFR = this._posResizeStartSize + iFY*2;
          } else {
            iFR = this._posResizeStartSize + iFX*2;
          }
  
          this._size = Math.max(this._minSize, iFR);
          this._boxResizeIsHover = true;
          res=true;
          this._events.trigger('area-resize');
      } else if (this._isCoordWithinBoxResize([mouseCurX,mouseCurY])) {
          cursor = 'nesw-resize';
          this._areaIsHover = false;
          this._boxResizeIsHover = true;
          res=true;
      } else if(this._isCoordWithinArea([mouseCurX,mouseCurY])) {
          cursor = 'move';
          this._areaIsHover = true;
          res=true;
      }
  
      this._dontDragOutside();
      angular.element(this._ctx.canvas).css({'cursor': cursor});
  
      return res;
    };
  
    CropAreaCircle.prototype.processMouseDown=function(mouseDownX, mouseDownY) {
      if (this._isCoordWithinBoxResize([mouseDownX,mouseDownY])) {
        this._areaIsDragging = false;
        this._areaIsHover = false;
        this._boxResizeIsDragging = true;
        this._boxResizeIsHover = true;
        this._posResizeStartX=mouseDownX;
        this._posResizeStartY=mouseDownY;
        this._posResizeStartSize = this._size;
        this._events.trigger('area-resize-start');
      } else if (this._isCoordWithinArea([mouseDownX,mouseDownY])) {
        this._areaIsDragging = true;
        this._areaIsHover = true;
        this._boxResizeIsDragging = false;
        this._boxResizeIsHover = false;
        this._posDragStartX = mouseDownX - this._x;
        this._posDragStartY = mouseDownY - this._y;
        this._events.trigger('area-move-start');
      }
    };
  
    CropAreaCircle.prototype.processMouseUp=function(/*mouseUpX, mouseUpY*/) {
      if(this._areaIsDragging) {
        this._areaIsDragging = false;
        this._events.trigger('area-move-end');
      }
      if(this._boxResizeIsDragging) {
        this._boxResizeIsDragging = false;
        this._events.trigger('area-resize-end');
      }
      this._areaIsHover = false;
      this._boxResizeIsHover = false;
  
      this._posDragStartX = 0;
      this._posDragStartY = 0;
    };
  
    return CropAreaCircle;
  }]);
  
  
  
  crop.factory('cropAreaSquare', ['cropArea', function(CropArea) {
    var CropAreaSquare = function() {
      CropArea.apply(this, arguments);
  
      this._resizeCtrlBaseRadius = 10;
      this._resizeCtrlNormalRatio = 0.75;
      this._resizeCtrlHoverRatio = 1;
      this._iconMoveNormalRatio = 0.9;
      this._iconMoveHoverRatio = 1.2;
  
      this._resizeCtrlNormalRadius = this._resizeCtrlBaseRadius*this._resizeCtrlNormalRatio;
      this._resizeCtrlHoverRadius = this._resizeCtrlBaseRadius*this._resizeCtrlHoverRatio;
  
      this._posDragStartX=0;
      this._posDragStartY=0;
      this._posResizeStartX=0;
      this._posResizeStartY=0;
      this._posResizeStartSize=0;
  
      this._resizeCtrlIsHover = -1;
      this._areaIsHover = false;
      this._resizeCtrlIsDragging = -1;
      this._areaIsDragging = false;
    };
  
    CropAreaSquare.prototype = new CropArea();
  
    CropAreaSquare.prototype._calcSquareCorners=function() {
      var hSize=this._size/2;
      return [
        [this._x-hSize, this._y-hSize],
        [this._x+hSize, this._y-hSize],
        [this._x-hSize, this._y+hSize],
        [this._x+hSize, this._y+hSize]
      ];
    };
  
    CropAreaSquare.prototype._calcSquareDimensions=function() {
      var hSize=this._size/2;
      return {
        left: this._x-hSize,
        top: this._y-hSize,
        right: this._x+hSize,
        bottom: this._y+hSize
      };
    };
  
    CropAreaSquare.prototype._isCoordWithinArea=function(coord) {
      var squareDimensions=this._calcSquareDimensions();
      return (coord[0]>=squareDimensions.left&&coord[0]<=squareDimensions.right&&coord[1]>=squareDimensions.top&&coord[1]<=squareDimensions.bottom);
    };
  
    CropAreaSquare.prototype._isCoordWithinResizeCtrl=function(coord) {
      var resizeIconsCenterCoords=this._calcSquareCorners();
      var res=-1;
      for(var i=0,len=resizeIconsCenterCoords.length;i<len;i++) {
        var resizeIconCenterCoords=resizeIconsCenterCoords[i];
        if(coord[0] > resizeIconCenterCoords[0] - this._resizeCtrlHoverRadius && coord[0] < resizeIconCenterCoords[0] + this._resizeCtrlHoverRadius &&
           coord[1] > resizeIconCenterCoords[1] - this._resizeCtrlHoverRadius && coord[1] < resizeIconCenterCoords[1] + this._resizeCtrlHoverRadius) {
          res=i;
          break;
        }
      }
      return res;
    };
  
    CropAreaSquare.prototype._drawArea=function(ctx,centerCoords,size){
      var hSize=size/2;
      ctx.rect(centerCoords[0]-hSize,centerCoords[1]-hSize,size,size);
    };
  
    CropAreaSquare.prototype.draw=function() {
      CropArea.prototype.draw.apply(this, arguments);
  
      // draw move icon
      this._cropCanvas.drawIconMove([this._x,this._y], this._areaIsHover?this._iconMoveHoverRatio:this._iconMoveNormalRatio);
  
      // draw resize cubes
      var resizeIconsCenterCoords=this._calcSquareCorners();
      for(var i=0,len=resizeIconsCenterCoords.length;i<len;i++) {
        var resizeIconCenterCoords=resizeIconsCenterCoords[i];
        this._cropCanvas.drawIconResizeCircle(resizeIconCenterCoords, this._resizeCtrlBaseRadius, this._resizeCtrlIsHover===i?this._resizeCtrlHoverRatio:this._resizeCtrlNormalRatio);
      }
    };
  
    CropAreaSquare.prototype.processMouseMove=function(mouseCurX, mouseCurY) {
      var cursor='default';
      var res=false;
  
      this._resizeCtrlIsHover = -1;
      this._areaIsHover = false;
  
      if (this._areaIsDragging) {
        this._x = mouseCurX - this._posDragStartX;
        this._y = mouseCurY - this._posDragStartY;
        this._areaIsHover = true;
        cursor='move';
        res=true;
        this._events.trigger('area-move');
      } else if (this._resizeCtrlIsDragging>-1) {
        var xMulti, yMulti;
        switch(this._resizeCtrlIsDragging) {
          case 0: // Top Left
            xMulti=-1;
            yMulti=-1;
            cursor = 'nwse-resize';
            break;
          case 1: // Top Right
            xMulti=1;
            yMulti=-1;
            cursor = 'nesw-resize';
            break;
          case 2: // Bottom Left
            xMulti=-1;
            yMulti=1;
            cursor = 'nesw-resize';
            break;
          case 3: // Bottom Right
            xMulti=1;
            yMulti=1;
            cursor = 'nwse-resize';
            break;
        }
        var iFX = (mouseCurX - this._posResizeStartX)*xMulti;
        var iFY = (mouseCurY - this._posResizeStartY)*yMulti;
        var iFR;
        if(iFX>iFY) {
          iFR = this._posResizeStartSize + iFY;
        } else {
          iFR = this._posResizeStartSize + iFX;
        }
        var wasSize=this._size;
        this._size = Math.max(this._minSize, iFR);
        var posModifier=(this._size-wasSize)/2;
        this._x+=posModifier*xMulti;
        this._y+=posModifier*yMulti;
        this._resizeCtrlIsHover = this._resizeCtrlIsDragging;
        res=true;
        this._events.trigger('area-resize');
      } else {
        var hoveredResizeBox=this._isCoordWithinResizeCtrl([mouseCurX,mouseCurY]);
        if (hoveredResizeBox>-1) {
          switch(hoveredResizeBox) {
            case 0:
              cursor = 'nwse-resize';
              break;
            case 1:
              cursor = 'nesw-resize';
              break;
            case 2:
              cursor = 'nesw-resize';
              break;
            case 3:
              cursor = 'nwse-resize';
              break;
          }
          this._areaIsHover = false;
          this._resizeCtrlIsHover = hoveredResizeBox;
          res=true;
        } else if(this._isCoordWithinArea([mouseCurX,mouseCurY])) {
          cursor = 'move';
          this._areaIsHover = true;
          res=true;
        }
      }
  
      this._dontDragOutside();
      angular.element(this._ctx.canvas).css({'cursor': cursor});
  
      return res;
    };
  
    CropAreaSquare.prototype.processMouseDown=function(mouseDownX, mouseDownY) {
      var isWithinResizeCtrl=this._isCoordWithinResizeCtrl([mouseDownX,mouseDownY]);
      if (isWithinResizeCtrl>-1) {
        this._areaIsDragging = false;
        this._areaIsHover = false;
        this._resizeCtrlIsDragging = isWithinResizeCtrl;
        this._resizeCtrlIsHover = isWithinResizeCtrl;
        this._posResizeStartX=mouseDownX;
        this._posResizeStartY=mouseDownY;
        this._posResizeStartSize = this._size;
        this._events.trigger('area-resize-start');
      } else if (this._isCoordWithinArea([mouseDownX,mouseDownY])) {
        this._areaIsDragging = true;
        this._areaIsHover = true;
        this._resizeCtrlIsDragging = -1;
        this._resizeCtrlIsHover = -1;
        this._posDragStartX = mouseDownX - this._x;
        this._posDragStartY = mouseDownY - this._y;
        this._events.trigger('area-move-start');
      }
    };
  
    CropAreaSquare.prototype.processMouseUp=function(/*mouseUpX, mouseUpY*/) {
      if(this._areaIsDragging) {
        this._areaIsDragging = false;
        this._events.trigger('area-move-end');
      }
      if(this._resizeCtrlIsDragging>-1) {
        this._resizeCtrlIsDragging = -1;
        this._events.trigger('area-resize-end');
      }
      this._areaIsHover = false;
      this._resizeCtrlIsHover = -1;
  
      this._posDragStartX = 0;
      this._posDragStartY = 0;
    };
  
    return CropAreaSquare;
  }]);
  
  crop.factory('cropArea', ['cropCanvas', function(CropCanvas) {
    var CropArea = function(ctx, events) {
      this._ctx=ctx;
      this._events=events;
  
      this._minSize=80;
  
      this._cropCanvas=new CropCanvas(ctx);
  
      this._image=new Image();
      this._x = 0;
      this._y = 0;
      this._size = 200;
    };
  
    /* GETTERS/SETTERS */
  
    CropArea.prototype.getImage = function () {
      return this._image;
    };
    CropArea.prototype.setImage = function (image) {
      this._image = image;
    };
  
    CropArea.prototype.getX = function () {
      return this._x;
    };
    CropArea.prototype.setX = function (x) {
      this._x = x;
      this._dontDragOutside();
    };
  
    CropArea.prototype.getY = function () {
      return this._y;
    };
    CropArea.prototype.setY = function (y) {
      this._y = y;
      this._dontDragOutside();
    };
  
    CropArea.prototype.getSize = function () {
      return this._size;
    };
    CropArea.prototype.setSize = function (size) {
      this._size = Math.max(this._minSize, size);
      this._dontDragOutside();
    };
  
    CropArea.prototype.getMinSize = function () {
      return this._minSize;
    };
    CropArea.prototype.setMinSize = function (size) {
      this._minSize = size;
      this._size = Math.max(this._minSize, this._size);
      this._dontDragOutside();
    };
  
    /* FUNCTIONS */
    CropArea.prototype._dontDragOutside=function() {
      var h=this._ctx.canvas.height,
          w=this._ctx.canvas.width;
      if(this._size>w) { this._size=w; }
      if(this._size>h) { this._size=h; }
      if(this._x<this._size/2) { this._x=this._size/2; }
      if(this._x>w-this._size/2) { this._x=w-this._size/2; }
      if(this._y<this._size/2) { this._y=this._size/2; }
      if(this._y>h-this._size/2) { this._y=h-this._size/2; }
    };
  
    CropArea.prototype._drawArea=function() {};
  
    CropArea.prototype.draw=function() {
      // draw crop area
      this._cropCanvas.drawCropArea(this._image,[this._x,this._y],this._size,this._drawArea);
    };
  
    CropArea.prototype.processMouseMove=function() {};
  
    CropArea.prototype.processMouseDown=function() {};
  
    CropArea.prototype.processMouseUp=function() {};
  
    return CropArea;
  }]);
  
  crop.factory('cropCanvas', [function() {
    // Shape = Array of [x,y]; [0, 0] - center
    var shapeArrowNW=[[-0.5,-2],[-3,-4.5],[-0.5,-7],[-7,-7],[-7,-0.5],[-4.5,-3],[-2,-0.5]];
    var shapeArrowNE=[[0.5,-2],[3,-4.5],[0.5,-7],[7,-7],[7,-0.5],[4.5,-3],[2,-0.5]];
    var shapeArrowSW=[[-0.5,2],[-3,4.5],[-0.5,7],[-7,7],[-7,0.5],[-4.5,3],[-2,0.5]];
    var shapeArrowSE=[[0.5,2],[3,4.5],[0.5,7],[7,7],[7,0.5],[4.5,3],[2,0.5]];
    var shapeArrowN=[[-1.5,-2.5],[-1.5,-6],[-5,-6],[0,-11],[5,-6],[1.5,-6],[1.5,-2.5]];
    var shapeArrowW=[[-2.5,-1.5],[-6,-1.5],[-6,-5],[-11,0],[-6,5],[-6,1.5],[-2.5,1.5]];
    var shapeArrowS=[[-1.5,2.5],[-1.5,6],[-5,6],[0,11],[5,6],[1.5,6],[1.5,2.5]];
    var shapeArrowE=[[2.5,-1.5],[6,-1.5],[6,-5],[11,0],[6,5],[6,1.5],[2.5,1.5]];
  
    // Colors
    var colors={
      areaOutline: '#fff',
      resizeBoxStroke: '#fff',
      resizeBoxFill: '#444',
      resizeBoxArrowFill: '#fff',
      resizeCircleStroke: '#fff',
      resizeCircleFill: '#444',
      moveIconFill: '#fff'
    };
  
    return function(ctx){
  
      /* Base functions */
  
      // Calculate Point
      var calcPoint=function(point,offset,scale) {
          return [scale*point[0]+offset[0], scale*point[1]+offset[1]];
      };
  
      // Draw Filled Polygon
      var drawFilledPolygon=function(shape,fillStyle,centerCoords,scale) {
          ctx.save();
          ctx.fillStyle = fillStyle;
          ctx.beginPath();
          var pc, pc0=calcPoint(shape[0],centerCoords,scale);
          ctx.moveTo(pc0[0],pc0[1]);
  
          for(var p in shape) {
              if (p > 0) {
                  pc=calcPoint(shape[p],centerCoords,scale);
                  ctx.lineTo(pc[0],pc[1]);
              }
          }
  
          ctx.lineTo(pc0[0],pc0[1]);
          ctx.fill();
          ctx.closePath();
          ctx.restore();
      };
  
      /* Icons */
  
      this.drawIconMove=function(centerCoords, scale) {
        drawFilledPolygon(shapeArrowN, colors.moveIconFill, centerCoords, scale);
        drawFilledPolygon(shapeArrowW, colors.moveIconFill, centerCoords, scale);
        drawFilledPolygon(shapeArrowS, colors.moveIconFill, centerCoords, scale);
        drawFilledPolygon(shapeArrowE, colors.moveIconFill, centerCoords, scale);
      };
  
      this.drawIconResizeCircle=function(centerCoords, circleRadius, scale) {
        var scaledCircleRadius=circleRadius*scale;
        ctx.save();
        ctx.strokeStyle = colors.resizeCircleStroke;
        ctx.lineWidth = 2;
        ctx.fillStyle = colors.resizeCircleFill;
        ctx.beginPath();
        ctx.arc(centerCoords[0],centerCoords[1],scaledCircleRadius,0,2*Math.PI);
        ctx.fill();
        ctx.stroke();
        ctx.closePath();
        ctx.restore();
      };
  
      this.drawIconResizeBoxBase=function(centerCoords, boxSize, scale) {
        var scaledBoxSize=boxSize*scale;
        ctx.save();
        ctx.strokeStyle = colors.resizeBoxStroke;
        ctx.lineWidth = 2;
        ctx.fillStyle = colors.resizeBoxFill;
        ctx.fillRect(centerCoords[0] - scaledBoxSize/2, centerCoords[1] - scaledBoxSize/2, scaledBoxSize, scaledBoxSize);
        ctx.strokeRect(centerCoords[0] - scaledBoxSize/2, centerCoords[1] - scaledBoxSize/2, scaledBoxSize, scaledBoxSize);
        ctx.restore();
      };
      this.drawIconResizeBoxNESW=function(centerCoords, boxSize, scale) {
        this.drawIconResizeBoxBase(centerCoords, boxSize, scale);
        drawFilledPolygon(shapeArrowNE, colors.resizeBoxArrowFill, centerCoords, scale);
        drawFilledPolygon(shapeArrowSW, colors.resizeBoxArrowFill, centerCoords, scale);
      };
      this.drawIconResizeBoxNWSE=function(centerCoords, boxSize, scale) {
        this.drawIconResizeBoxBase(centerCoords, boxSize, scale);
        drawFilledPolygon(shapeArrowNW, colors.resizeBoxArrowFill, centerCoords, scale);
        drawFilledPolygon(shapeArrowSE, colors.resizeBoxArrowFill, centerCoords, scale);
      };
  
      /* Crop Area */
  
      this.drawCropArea=function(image, centerCoords, size, fnDrawClipPath) {
        var xRatio=image.width/ctx.canvas.width,
            yRatio=image.height/ctx.canvas.height,
            xLeft=centerCoords[0]-size/2,
            yTop=centerCoords[1]-size/2;
  
        ctx.save();
        ctx.strokeStyle = colors.areaOutline;
        ctx.lineWidth = 2;
        ctx.beginPath();
        fnDrawClipPath(ctx, centerCoords, size);
        ctx.stroke();
        ctx.clip();
  
        // draw part of original image
        if (size > 0) {
            ctx.drawImage(image, xLeft*xRatio, yTop*yRatio, size*xRatio, size*yRatio, xLeft, yTop, size, size);
        }
  
        ctx.beginPath();
        fnDrawClipPath(ctx, centerCoords, size);
        ctx.stroke();
        ctx.clip();
  
        ctx.restore();
      };
  
    };
  }]);
  
  /**
   * EXIF service is based on the exif-js library (https://github.com/jseidelin/exif-js)
   */
  
  crop.service('cropEXIF', [function() {
    var debug = false;
  
    var ExifTags = this.Tags = {
  
        // version tags
        0x9000 : "ExifVersion",             // EXIF version
        0xA000 : "FlashpixVersion",         // Flashpix format version
  
        // colorspace tags
        0xA001 : "ColorSpace",              // Color space information tag
  
        // image configuration
        0xA002 : "PixelXDimension",         // Valid width of meaningful image
        0xA003 : "PixelYDimension",         // Valid height of meaningful image
        0x9101 : "ComponentsConfiguration", // Information about channels
        0x9102 : "CompressedBitsPerPixel",  // Compressed bits per pixel
  
        // user information
        0x927C : "MakerNote",               // Any desired information written by the manufacturer
        0x9286 : "UserComment",             // Comments by user
  
        // related file
        0xA004 : "RelatedSoundFile",        // Name of related sound file
  
        // date and time
        0x9003 : "DateTimeOriginal",        // Date and time when the original image was generated
        0x9004 : "DateTimeDigitized",       // Date and time when the image was stored digitally
        0x9290 : "SubsecTime",              // Fractions of seconds for DateTime
        0x9291 : "SubsecTimeOriginal",      // Fractions of seconds for DateTimeOriginal
        0x9292 : "SubsecTimeDigitized",     // Fractions of seconds for DateTimeDigitized
  
        // picture-taking conditions
        0x829A : "ExposureTime",            // Exposure time (in seconds)
        0x829D : "FNumber",                 // F number
        0x8822 : "ExposureProgram",         // Exposure program
        0x8824 : "SpectralSensitivity",     // Spectral sensitivity
        0x8827 : "ISOSpeedRatings",         // ISO speed rating
        0x8828 : "OECF",                    // Optoelectric conversion factor
        0x9201 : "ShutterSpeedValue",       // Shutter speed
        0x9202 : "ApertureValue",           // Lens aperture
        0x9203 : "BrightnessValue",         // Value of brightness
        0x9204 : "ExposureBias",            // Exposure bias
        0x9205 : "MaxApertureValue",        // Smallest F number of lens
        0x9206 : "SubjectDistance",         // Distance to subject in meters
        0x9207 : "MeteringMode",            // Metering mode
        0x9208 : "LightSource",             // Kind of light source
        0x9209 : "Flash",                   // Flash status
        0x9214 : "SubjectArea",             // Location and area of main subject
        0x920A : "FocalLength",             // Focal length of the lens in mm
        0xA20B : "FlashEnergy",             // Strobe energy in BCPS
        0xA20C : "SpatialFrequencyResponse",    //
        0xA20E : "FocalPlaneXResolution",   // Number of pixels in width direction per FocalPlaneResolutionUnit
        0xA20F : "FocalPlaneYResolution",   // Number of pixels in height direction per FocalPlaneResolutionUnit
        0xA210 : "FocalPlaneResolutionUnit",    // Unit for measuring FocalPlaneXResolution and FocalPlaneYResolution
        0xA214 : "SubjectLocation",         // Location of subject in image
        0xA215 : "ExposureIndex",           // Exposure index selected on camera
        0xA217 : "SensingMethod",           // Image sensor type
        0xA300 : "FileSource",              // Image source (3 == DSC)
        0xA301 : "SceneType",               // Scene type (1 == directly photographed)
        0xA302 : "CFAPattern",              // Color filter array geometric pattern
        0xA401 : "CustomRendered",          // Special processing
        0xA402 : "ExposureMode",            // Exposure mode
        0xA403 : "WhiteBalance",            // 1 = auto white balance, 2 = manual
        0xA404 : "DigitalZoomRation",       // Digital zoom ratio
        0xA405 : "FocalLengthIn35mmFilm",   // Equivalent foacl length assuming 35mm film camera (in mm)
        0xA406 : "SceneCaptureType",        // Type of scene
        0xA407 : "GainControl",             // Degree of overall image gain adjustment
        0xA408 : "Contrast",                // Direction of contrast processing applied by camera
        0xA409 : "Saturation",              // Direction of saturation processing applied by camera
        0xA40A : "Sharpness",               // Direction of sharpness processing applied by camera
        0xA40B : "DeviceSettingDescription",    //
        0xA40C : "SubjectDistanceRange",    // Distance to subject
  
        // other tags
        0xA005 : "InteroperabilityIFDPointer",
        0xA420 : "ImageUniqueID"            // Identifier assigned uniquely to each image
    };
  
    var TiffTags = this.TiffTags = {
        0x0100 : "ImageWidth",
        0x0101 : "ImageHeight",
        0x8769 : "ExifIFDPointer",
        0x8825 : "GPSInfoIFDPointer",
        0xA005 : "InteroperabilityIFDPointer",
        0x0102 : "BitsPerSample",
        0x0103 : "Compression",
        0x0106 : "PhotometricInterpretation",
        0x0112 : "Orientation",
        0x0115 : "SamplesPerPixel",
        0x011C : "PlanarConfiguration",
        0x0212 : "YCbCrSubSampling",
        0x0213 : "YCbCrPositioning",
        0x011A : "XResolution",
        0x011B : "YResolution",
        0x0128 : "ResolutionUnit",
        0x0111 : "StripOffsets",
        0x0116 : "RowsPerStrip",
        0x0117 : "StripByteCounts",
        0x0201 : "JPEGInterchangeFormat",
        0x0202 : "JPEGInterchangeFormatLength",
        0x012D : "TransferFunction",
        0x013E : "WhitePoint",
        0x013F : "PrimaryChromaticities",
        0x0211 : "YCbCrCoefficients",
        0x0214 : "ReferenceBlackWhite",
        0x0132 : "DateTime",
        0x010E : "ImageDescription",
        0x010F : "Make",
        0x0110 : "Model",
        0x0131 : "Software",
        0x013B : "Artist",
        0x8298 : "Copyright"
    };
  
    var GPSTags = this.GPSTags = {
        0x0000 : "GPSVersionID",
        0x0001 : "GPSLatitudeRef",
        0x0002 : "GPSLatitude",
        0x0003 : "GPSLongitudeRef",
        0x0004 : "GPSLongitude",
        0x0005 : "GPSAltitudeRef",
        0x0006 : "GPSAltitude",
        0x0007 : "GPSTimeStamp",
        0x0008 : "GPSSatellites",
        0x0009 : "GPSStatus",
        0x000A : "GPSMeasureMode",
        0x000B : "GPSDOP",
        0x000C : "GPSSpeedRef",
        0x000D : "GPSSpeed",
        0x000E : "GPSTrackRef",
        0x000F : "GPSTrack",
        0x0010 : "GPSImgDirectionRef",
        0x0011 : "GPSImgDirection",
        0x0012 : "GPSMapDatum",
        0x0013 : "GPSDestLatitudeRef",
        0x0014 : "GPSDestLatitude",
        0x0015 : "GPSDestLongitudeRef",
        0x0016 : "GPSDestLongitude",
        0x0017 : "GPSDestBearingRef",
        0x0018 : "GPSDestBearing",
        0x0019 : "GPSDestDistanceRef",
        0x001A : "GPSDestDistance",
        0x001B : "GPSProcessingMethod",
        0x001C : "GPSAreaInformation",
        0x001D : "GPSDateStamp",
        0x001E : "GPSDifferential"
    };
  
    var StringValues = this.StringValues = {
        ExposureProgram : {
            0 : "Not defined",
            1 : "Manual",
            2 : "Normal program",
            3 : "Aperture priority",
            4 : "Shutter priority",
            5 : "Creative program",
            6 : "Action program",
            7 : "Portrait mode",
            8 : "Landscape mode"
        },
        MeteringMode : {
            0 : "Unknown",
            1 : "Average",
            2 : "CenterWeightedAverage",
            3 : "Spot",
            4 : "MultiSpot",
            5 : "Pattern",
            6 : "Partial",
            255 : "Other"
        },
        LightSource : {
            0 : "Unknown",
            1 : "Daylight",
            2 : "Fluorescent",
            3 : "Tungsten (incandescent light)",
            4 : "Flash",
            9 : "Fine weather",
            10 : "Cloudy weather",
            11 : "Shade",
            12 : "Daylight fluorescent (D 5700 - 7100K)",
            13 : "Day white fluorescent (N 4600 - 5400K)",
            14 : "Cool white fluorescent (W 3900 - 4500K)",
            15 : "White fluorescent (WW 3200 - 3700K)",
            17 : "Standard light A",
            18 : "Standard light B",
            19 : "Standard light C",
            20 : "D55",
            21 : "D65",
            22 : "D75",
            23 : "D50",
            24 : "ISO studio tungsten",
            255 : "Other"
        },
        Flash : {
            0x0000 : "Flash did not fire",
            0x0001 : "Flash fired",
            0x0005 : "Strobe return light not detected",
            0x0007 : "Strobe return light detected",
            0x0009 : "Flash fired, compulsory flash mode",
            0x000D : "Flash fired, compulsory flash mode, return light not detected",
            0x000F : "Flash fired, compulsory flash mode, return light detected",
            0x0010 : "Flash did not fire, compulsory flash mode",
            0x0018 : "Flash did not fire, auto mode",
            0x0019 : "Flash fired, auto mode",
            0x001D : "Flash fired, auto mode, return light not detected",
            0x001F : "Flash fired, auto mode, return light detected",
            0x0020 : "No flash function",
            0x0041 : "Flash fired, red-eye reduction mode",
            0x0045 : "Flash fired, red-eye reduction mode, return light not detected",
            0x0047 : "Flash fired, red-eye reduction mode, return light detected",
            0x0049 : "Flash fired, compulsory flash mode, red-eye reduction mode",
            0x004D : "Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",
            0x004F : "Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",
            0x0059 : "Flash fired, auto mode, red-eye reduction mode",
            0x005D : "Flash fired, auto mode, return light not detected, red-eye reduction mode",
            0x005F : "Flash fired, auto mode, return light detected, red-eye reduction mode"
        },
        SensingMethod : {
            1 : "Not defined",
            2 : "One-chip color area sensor",
            3 : "Two-chip color area sensor",
            4 : "Three-chip color area sensor",
            5 : "Color sequential area sensor",
            7 : "Trilinear sensor",
            8 : "Color sequential linear sensor"
        },
        SceneCaptureType : {
            0 : "Standard",
            1 : "Landscape",
            2 : "Portrait",
            3 : "Night scene"
        },
        SceneType : {
            1 : "Directly photographed"
        },
        CustomRendered : {
            0 : "Normal process",
            1 : "Custom process"
        },
        WhiteBalance : {
            0 : "Auto white balance",
            1 : "Manual white balance"
        },
        GainControl : {
            0 : "None",
            1 : "Low gain up",
            2 : "High gain up",
            3 : "Low gain down",
            4 : "High gain down"
        },
        Contrast : {
            0 : "Normal",
            1 : "Soft",
            2 : "Hard"
        },
        Saturation : {
            0 : "Normal",
            1 : "Low saturation",
            2 : "High saturation"
        },
        Sharpness : {
            0 : "Normal",
            1 : "Soft",
            2 : "Hard"
        },
        SubjectDistanceRange : {
            0 : "Unknown",
            1 : "Macro",
            2 : "Close view",
            3 : "Distant view"
        },
        FileSource : {
            3 : "DSC"
        },
  
        Components : {
            0 : "",
            1 : "Y",
            2 : "Cb",
            3 : "Cr",
            4 : "R",
            5 : "G",
            6 : "B"
        }
    };
  
    function addEvent(element, event, handler) {
        if (element.addEventListener) {
            element.addEventListener(event, handler, false);
        } else if (element.attachEvent) {
            element.attachEvent("on" + event, handler);
        }
    }
  
    function imageHasData(img) {
        return !!(img.exifdata);
    }
  
    function base64ToArrayBuffer(base64, contentType) {
        contentType = contentType || base64.match(/^data\:([^\;]+)\;base64,/mi)[1] || ''; // e.g. 'data:image/jpeg;base64,...' => 'image/jpeg'
        base64 = base64.replace(/^data\:([^\;]+)\;base64,/gmi, '');
        var binary = atob(base64);
        var len = binary.length;
        var buffer = new ArrayBuffer(len);
        var view = new Uint8Array(buffer);
        for (var i = 0; i < len; i++) {
            view[i] = binary.charCodeAt(i);
        }
        return buffer;
    }
  
    function objectURLToBlob(url, callback) {
        var http = new XMLHttpRequest();
        http.open("GET", url, true);
        http.responseType = "blob";
        http.onload = function(e) {
            if (this.status == 200 || this.status === 0) {
                callback(this.response);
            }
        };
        http.send();
    }
  
    function getImageData(img, callback) {
        function handleBinaryFile(binFile) {
            var data = findEXIFinJPEG(binFile);
            var iptcdata = findIPTCinJPEG(binFile);
            img.exifdata = data || {};
            img.iptcdata = iptcdata || {};
            if (callback) {
                callback.call(img);
            }
        }
  
        if (img.src) {
            if (/^data\:/i.test(img.src)) { // Data URI
                var arrayBuffer = base64ToArrayBuffer(img.src);
                handleBinaryFile(arrayBuffer);
  
            } else if (/^blob\:/i.test(img.src)) { // Object URL
                var fileReader = new FileReader();
                fileReader.onload = function(e) {
                    handleBinaryFile(e.target.result);
                };
                objectURLToBlob(img.src, function (blob) {
                    fileReader.readAsArrayBuffer(blob);
                });
            } else {
                var http = new XMLHttpRequest();
                http.onload = function() {
                    if (this.status == 200 || this.status === 0) {
                        handleBinaryFile(http.response);
                    } else {
                        throw "Could not load image";
                    }
                    http = null;
                };
                http.open("GET", img.src, true);
                http.responseType = "arraybuffer";
                http.send(null);
            }
        } else if (window.FileReader && (img instanceof window.Blob || img instanceof window.File)) {
            var fileReader = new FileReader();
            fileReader.onload = function(e) {
                if (debug) console.log("Got file of length " + e.target.result.byteLength);
                handleBinaryFile(e.target.result);
            };
  
            fileReader.readAsArrayBuffer(img);
        }
    }
  
    function findEXIFinJPEG(file) {
        var dataView = new DataView(file);
  
        if (debug) console.log("Got file of length " + file.byteLength);
        if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {
            if (debug) console.log("Not a valid JPEG");
            return false; // not a valid jpeg
        }
  
        var offset = 2,
            length = file.byteLength,
            marker;
  
        while (offset < length) {
            if (dataView.getUint8(offset) != 0xFF) {
                if (debug) console.log("Not a valid marker at offset " + offset + ", found: " + dataView.getUint8(offset));
                return false; // not a valid marker, something is wrong
            }
  
            marker = dataView.getUint8(offset + 1);
            if (debug) console.log(marker);
  
            // we could implement handling for other markers here,
            // but we're only looking for 0xFFE1 for EXIF data
  
            if (marker == 225) {
                if (debug) console.log("Found 0xFFE1 marker");
  
                return readEXIFData(dataView, offset + 4, dataView.getUint16(offset + 2) - 2);
  
                // offset += 2 + file.getShortAt(offset+2, true);
  
            } else {
                offset += 2 + dataView.getUint16(offset+2);
            }
  
        }
  
    }
  
    function findIPTCinJPEG(file) {
        var dataView = new DataView(file);
  
        if (debug) console.log("Got file of length " + file.byteLength);
        if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {
            if (debug) console.log("Not a valid JPEG");
            return false; // not a valid jpeg
        }
  
        var offset = 2,
            length = file.byteLength;
  
        var isFieldSegmentStart = function(dataView, offset){
            return (
                dataView.getUint8(offset) === 0x38 &&
                dataView.getUint8(offset+1) === 0x42 &&
                dataView.getUint8(offset+2) === 0x49 &&
                dataView.getUint8(offset+3) === 0x4D &&
                dataView.getUint8(offset+4) === 0x04 &&
                dataView.getUint8(offset+5) === 0x04
            );
        };
  
        while (offset < length) {
  
            if ( isFieldSegmentStart(dataView, offset )){
  
                // Get the length of the name header (which is padded to an even number of bytes)
                var nameHeaderLength = dataView.getUint8(offset+7);
                if(nameHeaderLength % 2 !== 0) nameHeaderLength += 1;
                // Check for pre photoshop 6 format
                if(nameHeaderLength === 0) {
                    // Always 4
                    nameHeaderLength = 4;
                }
  
                var startOffset = offset + 8 + nameHeaderLength;
                var sectionLength = dataView.getUint16(offset + 6 + nameHeaderLength);
  
                return readIPTCData(file, startOffset, sectionLength);
  
                break;
  
            }
  
            // Not the marker, continue searching
            offset++;
  
        }
  
    }
    var IptcFieldMap = {
        0x78 : 'caption',
        0x6E : 'credit',
        0x19 : 'keywords',
        0x37 : 'dateCreated',
        0x50 : 'byline',
        0x55 : 'bylineTitle',
        0x7A : 'captionWriter',
        0x69 : 'headline',
        0x74 : 'copyright',
        0x0F : 'category'
    };
    function readIPTCData(file, startOffset, sectionLength){
        var dataView = new DataView(file);
        var data = {};
        var fieldValue, fieldName, dataSize, segmentType, segmentSize;
        var segmentStartPos = startOffset;
        while(segmentStartPos < startOffset+sectionLength) {
            if(dataView.getUint8(segmentStartPos) === 0x1C && dataView.getUint8(segmentStartPos+1) === 0x02){
                segmentType = dataView.getUint8(segmentStartPos+2);
                if(segmentType in IptcFieldMap) {
                    dataSize = dataView.getInt16(segmentStartPos+3);
                    segmentSize = dataSize + 5;
                    fieldName = IptcFieldMap[segmentType];
                    fieldValue = getStringFromDB(dataView, segmentStartPos+5, dataSize);
                    // Check if we already stored a value with this name
                    if(data.hasOwnProperty(fieldName)) {
                        // Value already stored with this name, create multivalue field
                        if(data[fieldName] instanceof Array) {
                            data[fieldName].push(fieldValue);
                        }
                        else {
                            data[fieldName] = [data[fieldName], fieldValue];
                        }
                    }
                    else {
                        data[fieldName] = fieldValue;
                    }
                }
  
            }
            segmentStartPos++;
        }
        return data;
    }
  
    function readTags(file, tiffStart, dirStart, strings, bigEnd) {
        var entries = file.getUint16(dirStart, !bigEnd),
            tags = {},
            entryOffset, tag,
            i;
  
        for (i=0;i<entries;i++) {
            entryOffset = dirStart + i*12 + 2;
            tag = strings[file.getUint16(entryOffset, !bigEnd)];
            if (!tag && debug) console.log("Unknown tag: " + file.getUint16(entryOffset, !bigEnd));
            tags[tag] = readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd);
        }
        return tags;
    }
  
    function readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd) {
        var type = file.getUint16(entryOffset+2, !bigEnd),
            numValues = file.getUint32(entryOffset+4, !bigEnd),
            valueOffset = file.getUint32(entryOffset+8, !bigEnd) + tiffStart,
            offset,
            vals, val, n,
            numerator, denominator;
  
        switch (type) {
            case 1: // byte, 8-bit unsigned int
            case 7: // undefined, 8-bit byte, value depending on field
                if (numValues == 1) {
                    return file.getUint8(entryOffset + 8, !bigEnd);
                } else {
                    offset = numValues > 4 ? valueOffset : (entryOffset + 8);
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        vals[n] = file.getUint8(offset + n);
                    }
                    return vals;
                }
  
            case 2: // ascii, 8-bit byte
                offset = numValues > 4 ? valueOffset : (entryOffset + 8);
                return getStringFromDB(file, offset, numValues-1);
  
            case 3: // short, 16 bit int
                if (numValues == 1) {
                    return file.getUint16(entryOffset + 8, !bigEnd);
                } else {
                    offset = numValues > 2 ? valueOffset : (entryOffset + 8);
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        vals[n] = file.getUint16(offset + 2*n, !bigEnd);
                    }
                    return vals;
                }
  
            case 4: // long, 32 bit int
                if (numValues == 1) {
                    return file.getUint32(entryOffset + 8, !bigEnd);
                } else {
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        vals[n] = file.getUint32(valueOffset + 4*n, !bigEnd);
                    }
                    return vals;
                }
  
            case 5:    // rational = two long values, first is numerator, second is denominator
                if (numValues == 1) {
                    numerator = file.getUint32(valueOffset, !bigEnd);
                    denominator = file.getUint32(valueOffset+4, !bigEnd);
                    val = new Number(numerator / denominator);
                    val.numerator = numerator;
                    val.denominator = denominator;
                    return val;
                } else {
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        numerator = file.getUint32(valueOffset + 8*n, !bigEnd);
                        denominator = file.getUint32(valueOffset+4 + 8*n, !bigEnd);
                        vals[n] = new Number(numerator / denominator);
                        vals[n].numerator = numerator;
                        vals[n].denominator = denominator;
                    }
                    return vals;
                }
  
            case 9: // slong, 32 bit signed int
                if (numValues == 1) {
                    return file.getInt32(entryOffset + 8, !bigEnd);
                } else {
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        vals[n] = file.getInt32(valueOffset + 4*n, !bigEnd);
                    }
                    return vals;
                }
  
            case 10: // signed rational, two slongs, first is numerator, second is denominator
                if (numValues == 1) {
                    return file.getInt32(valueOffset, !bigEnd) / file.getInt32(valueOffset+4, !bigEnd);
                } else {
                    vals = [];
                    for (n=0;n<numValues;n++) {
                        vals[n] = file.getInt32(valueOffset + 8*n, !bigEnd) / file.getInt32(valueOffset+4 + 8*n, !bigEnd);
                    }
                    return vals;
                }
        }
    }
  
    function getStringFromDB(buffer, start, length) {
        var outstr = "";
        for (var n = start; n < start+length; n++) {
            outstr += String.fromCharCode(buffer.getUint8(n));
        }
        return outstr;
    }
  
    function readEXIFData(file, start) {
        if (getStringFromDB(file, start, 4) != "Exif") {
            if (debug) console.log("Not valid EXIF data! " + getStringFromDB(file, start, 4));
            return false;
        }
  
        var bigEnd,
            tags, tag,
            exifData, gpsData,
            tiffOffset = start + 6;
  
        // test for TIFF validity and endianness
        if (file.getUint16(tiffOffset) == 0x4949) {
            bigEnd = false;
        } else if (file.getUint16(tiffOffset) == 0x4D4D) {
            bigEnd = true;
        } else {
            if (debug) console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)");
            return false;
        }
  
        if (file.getUint16(tiffOffset+2, !bigEnd) != 0x002A) {
            if (debug) console.log("Not valid TIFF data! (no 0x002A)");
            return false;
        }
  
        var firstIFDOffset = file.getUint32(tiffOffset+4, !bigEnd);
  
        if (firstIFDOffset < 0x00000008) {
            if (debug) console.log("Not valid TIFF data! (First offset less than 8)", file.getUint32(tiffOffset+4, !bigEnd));
            return false;
        }
  
        tags = readTags(file, tiffOffset, tiffOffset + firstIFDOffset, TiffTags, bigEnd);
  
        if (tags.ExifIFDPointer) {
            exifData = readTags(file, tiffOffset, tiffOffset + tags.ExifIFDPointer, ExifTags, bigEnd);
            for (tag in exifData) {
                switch (tag) {
                    case "LightSource" :
                    case "Flash" :
                    case "MeteringMode" :
                    case "ExposureProgram" :
                    case "SensingMethod" :
                    case "SceneCaptureType" :
                    case "SceneType" :
                    case "CustomRendered" :
                    case "WhiteBalance" :
                    case "GainControl" :
                    case "Contrast" :
                    case "Saturation" :
                    case "Sharpness" :
                    case "SubjectDistanceRange" :
                    case "FileSource" :
                        exifData[tag] = StringValues[tag][exifData[tag]];
                        break;
  
                    case "ExifVersion" :
                    case "FlashpixVersion" :
                        exifData[tag] = String.fromCharCode(exifData[tag][0], exifData[tag][1], exifData[tag][2], exifData[tag][3]);
                        break;
  
                    case "ComponentsConfiguration" :
                        exifData[tag] =
                            StringValues.Components[exifData[tag][0]] +
                            StringValues.Components[exifData[tag][1]] +
                            StringValues.Components[exifData[tag][2]] +
                            StringValues.Components[exifData[tag][3]];
                        break;
                }
                tags[tag] = exifData[tag];
            }
        }
  
        if (tags.GPSInfoIFDPointer) {
            gpsData = readTags(file, tiffOffset, tiffOffset + tags.GPSInfoIFDPointer, GPSTags, bigEnd);
            for (tag in gpsData) {
                switch (tag) {
                    case "GPSVersionID" :
                        gpsData[tag] = gpsData[tag][0] +
                            "." + gpsData[tag][1] +
                            "." + gpsData[tag][2] +
                            "." + gpsData[tag][3];
                        break;
                }
                tags[tag] = gpsData[tag];
            }
        }
  
        return tags;
    }
  
    this.getData = function(img, callback) {
        if ((img instanceof Image || img instanceof HTMLImageElement) && !img.complete) return false;
  
        if (!imageHasData(img)) {
            getImageData(img, callback);
        } else {
            if (callback) {
                callback.call(img);
            }
        }
        return true;
    }
  
    this.getTag = function(img, tag) {
        if (!imageHasData(img)) return;
        return img.exifdata[tag];
    }
  
    this.getAllTags = function(img) {
        if (!imageHasData(img)) return {};
        var a,
            data = img.exifdata,
            tags = {};
        for (a in data) {
            if (data.hasOwnProperty(a)) {
                tags[a] = data[a];
            }
        }
        return tags;
    }
  
    this.pretty = function(img) {
        if (!imageHasData(img)) return "";
        var a,
            data = img.exifdata,
            strPretty = "";
        for (a in data) {
            if (data.hasOwnProperty(a)) {
                if (typeof data[a] == "object") {
                    if (data[a] instanceof Number) {
                        strPretty += a + " : " + data[a] + " [" + data[a].numerator + "/" + data[a].denominator + "]\r\n";
                    } else {
                        strPretty += a + " : [" + data[a].length + " values]\r\n";
                    }
                } else {
                    strPretty += a + " : " + data[a] + "\r\n";
                }
            }
        }
        return strPretty;
    }
  
    this.readFromBinaryFile = function(file) {
        return findEXIFinJPEG(file);
    }
  }]);
  
  crop.factory('cropHost', ['$document', 'cropAreaCircle', 'cropAreaSquare', 'cropEXIF', function($document, CropAreaCircle, CropAreaSquare, cropEXIF) {
    /* STATIC FUNCTIONS */
  
    // Get Element's Offset
    var getElementOffset=function(elem) {
        var box = elem.getBoundingClientRect();
  
        var body = document.body;
        var docElem = document.documentElement;
  
        var scrollTop = window.pageYOffset || docElem.scrollTop || body.scrollTop;
        var scrollLeft = window.pageXOffset || docElem.scrollLeft || body.scrollLeft;
  
        var clientTop = docElem.clientTop || body.clientTop || 0;
        var clientLeft = docElem.clientLeft || body.clientLeft || 0;
  
        var top  = box.top +  scrollTop - clientTop;
        var left = box.left + scrollLeft - clientLeft;
  
        return { top: Math.round(top), left: Math.round(left) };
    };
  
    return function(elCanvas, opts, events){
      /* PRIVATE VARIABLES */
  
      // Object Pointers
      var ctx=null,
          image=null,
          theArea=null;
  
      // Dimensions
      var minCanvasDims=[100,100],
          maxCanvasDims=[300,300];
  
      // Result Image size
      var resImgSize=200;
  
      // Result Image type
      var resImgFormat='image/png';
  
      // Result Image quality
      var resImgQuality=null;
  
      /* PRIVATE FUNCTIONS */
  
      // Draw Scene
      function drawScene() {
        // clear canvas
        ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
  
        if(image!==null) {
          // draw source image
          ctx.drawImage(image, 0, 0, ctx.canvas.width, ctx.canvas.height);
  
          ctx.save();
  
          // and make it darker
          ctx.fillStyle = 'rgba(0, 0, 0, 0.65)';
          ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
  
          ctx.restore();
  
          // draw Area
          theArea.draw();
        }
      }
  
      // Resets CropHost
      var resetCropHost=function() {
        if(image!==null) {
          theArea.setImage(image);
          var imageDims=[image.width, image.height],
              imageRatio=image.width/image.height,
              canvasDims=imageDims;
  
          if(canvasDims[0]>maxCanvasDims[0]) {
            canvasDims[0]=maxCanvasDims[0];
            canvasDims[1]=canvasDims[0]/imageRatio;
          } else if(canvasDims[0]<minCanvasDims[0]) {
            canvasDims[0]=minCanvasDims[0];
            canvasDims[1]=canvasDims[0]/imageRatio;
          }
          if(canvasDims[1]>maxCanvasDims[1]) {
            canvasDims[1]=maxCanvasDims[1];
            canvasDims[0]=canvasDims[1]*imageRatio;
          } else if(canvasDims[1]<minCanvasDims[1]) {
            canvasDims[1]=minCanvasDims[1];
            canvasDims[0]=canvasDims[1]*imageRatio;
          }
          elCanvas.prop('width',canvasDims[0]).prop('height',canvasDims[1]).css({'margin-left': -canvasDims[0]/2+'px', 'margin-top': -canvasDims[1]/2+'px'});
  
          theArea.setX(ctx.canvas.width/2);
          theArea.setY(ctx.canvas.height/2);
          theArea.setSize(Math.min(200, ctx.canvas.width/2, ctx.canvas.height/2));
        } else {
          elCanvas.prop('width',0).prop('height',0).css({'margin-top': 0});
        }
  
        drawScene();
      };
  
      /**
       * Returns event.changedTouches directly if event is a TouchEvent.
       * If event is a jQuery event, return changedTouches of event.originalEvent
       */
      var getChangedTouches=function(event){
        if(angular.isDefined(event.changedTouches)){
          return event.changedTouches;
        }else{
          return event.originalEvent.changedTouches;
        }
      };
  
      var onMouseMove=function(e) {
        if(image!==null) {
          var offset=getElementOffset(ctx.canvas),
              pageX, pageY;
          if(e.type === 'touchmove') {
            pageX=getChangedTouches(e)[0].pageX;
            pageY=getChangedTouches(e)[0].pageY;
          } else {
            pageX=e.pageX;
            pageY=e.pageY;
          }
          theArea.processMouseMove(pageX-offset.left, pageY-offset.top);
          drawScene();
        }
      };
  
      var onMouseDown=function(e) {
        e.preventDefault();
        e.stopPropagation();
        if(image!==null) {
          var offset=getElementOffset(ctx.canvas),
              pageX, pageY;
          if(e.type === 'touchstart') {
            pageX=getChangedTouches(e)[0].pageX;
            pageY=getChangedTouches(e)[0].pageY;
          } else {
            pageX=e.pageX;
            pageY=e.pageY;
          }
          theArea.processMouseDown(pageX-offset.left, pageY-offset.top);
          drawScene();
        }
      };
  
      var onMouseUp=function(e) {
        if(image!==null) {
          var offset=getElementOffset(ctx.canvas),
              pageX, pageY;
          if(e.type === 'touchend') {
            pageX=getChangedTouches(e)[0].pageX;
            pageY=getChangedTouches(e)[0].pageY;
          } else {
            pageX=e.pageX;
            pageY=e.pageY;
          }
          theArea.processMouseUp(pageX-offset.left, pageY-offset.top);
          drawScene();
        }
      };
  
      this.getResultImageDataURI=function() {
        var temp_ctx, temp_canvas;
        temp_canvas = angular.element('<canvas></canvas>')[0];
        temp_ctx = temp_canvas.getContext('2d');
        temp_canvas.width = resImgSize;
        temp_canvas.height = resImgSize;
        if(image!==null){
          temp_ctx.drawImage(image, (theArea.getX()-theArea.getSize()/2)*(image.width/ctx.canvas.width), (theArea.getY()-theArea.getSize()/2)*(image.height/ctx.canvas.height), theArea.getSize()*(image.width/ctx.canvas.width), theArea.getSize()*(image.height/ctx.canvas.height), 0, 0, resImgSize, resImgSize);
        }
        if (resImgQuality!==null ){
          return temp_canvas.toDataURL(resImgFormat, resImgQuality);
        }
        return temp_canvas.toDataURL(resImgFormat);
      };
  
      this.setNewImageSource=function(imageSource) {
        image=null;
        resetCropHost();
        events.trigger('image-updated');
        if(!!imageSource) {
          var newImage = new Image();
          if(imageSource.substring(0,4).toLowerCase()==='http') {
            newImage.crossOrigin = 'anonymous';
          }
          newImage.onload = function(){
            events.trigger('load-done');
  
            cropEXIF.getData(newImage,function(){
              var orientation=cropEXIF.getTag(newImage,'Orientation');
  
              if([3,6,8].indexOf(orientation)>-1) {
                var canvas = document.createElement("canvas"),
                    ctx=canvas.getContext("2d"),
                    cw = newImage.width, ch = newImage.height, cx = 0, cy = 0, deg=0;
                switch(orientation) {
                  case 3:
                    cx=-newImage.width;
                    cy=-newImage.height;
                    deg=180;
                    break;
                  case 6:
                    cw = newImage.height;
                    ch = newImage.width;
                    cy=-newImage.height;
                    deg=90;
                    break;
                  case 8:
                    cw = newImage.height;
                    ch = newImage.width;
                    cx=-newImage.width;
                    deg=270;
                    break;
                }
  
                canvas.width = cw;
                canvas.height = ch;
                ctx.rotate(deg*Math.PI/180);
                ctx.drawImage(newImage, cx, cy);
  
                image=new Image();
                image.src = canvas.toDataURL("image/png");
              } else {
                image=newImage;
              }
              resetCropHost();
              events.trigger('image-updated');
            });
          };
          newImage.onerror=function() {
            events.trigger('load-error');
          };
          events.trigger('load-start');
          newImage.src=imageSource;
        }
      };
  
      this.setMaxDimensions=function(width, height) {
        maxCanvasDims=[width,height];
  
        if(image!==null) {
          var curWidth=ctx.canvas.width,
              curHeight=ctx.canvas.height;
  
          var imageDims=[image.width, image.height],
              imageRatio=image.width/image.height,
              canvasDims=imageDims;
  
          if(canvasDims[0]>maxCanvasDims[0]) {
            canvasDims[0]=maxCanvasDims[0];
            canvasDims[1]=canvasDims[0]/imageRatio;
          } else if(canvasDims[0]<minCanvasDims[0]) {
            canvasDims[0]=minCanvasDims[0];
            canvasDims[1]=canvasDims[0]/imageRatio;
          }
          if(canvasDims[1]>maxCanvasDims[1]) {
            canvasDims[1]=maxCanvasDims[1];
            canvasDims[0]=canvasDims[1]*imageRatio;
          } else if(canvasDims[1]<minCanvasDims[1]) {
            canvasDims[1]=minCanvasDims[1];
            canvasDims[0]=canvasDims[1]*imageRatio;
          }
          elCanvas.prop('width',canvasDims[0]).prop('height',canvasDims[1]).css({'margin-left': -canvasDims[0]/2+'px', 'margin-top': -canvasDims[1]/2+'px'});
  
          var ratioNewCurWidth=ctx.canvas.width/curWidth,
              ratioNewCurHeight=ctx.canvas.height/curHeight,
              ratioMin=Math.min(ratioNewCurWidth, ratioNewCurHeight);
  
          theArea.setX(theArea.getX()*ratioNewCurWidth);
          theArea.setY(theArea.getY()*ratioNewCurHeight);
          theArea.setSize(theArea.getSize()*ratioMin);
        } else {
          elCanvas.prop('width',0).prop('height',0).css({'margin-top': 0});
        }
  
        drawScene();
  
      };
  
      this.setAreaMinSize=function(size) {
        size=parseInt(size,10);
        if(!isNaN(size)) {
          theArea.setMinSize(size);
          drawScene();
        }
      };
  
      this.setResultImageSize=function(size) {
        size=parseInt(size,10);
        if(!isNaN(size)) {
          resImgSize=size;
        }
      };
  
      this.setResultImageFormat=function(format) {
        resImgFormat = format;
      };
  
      this.setResultImageQuality=function(quality){
        quality = parseFloat(quality);
        if (!isNaN(quality) && quality>=0 && quality<=1){
          resImgQuality = quality;
        }
      };
  
      this.setAreaType=function(type) {
        var curSize=theArea.getSize(),
            curMinSize=theArea.getMinSize(),
            curX=theArea.getX(),
            curY=theArea.getY();
  
        var AreaClass=CropAreaCircle;
        if(type==='square') {
          AreaClass=CropAreaSquare;
        }
        theArea = new AreaClass(ctx, events);
        theArea.setMinSize(curMinSize);
        theArea.setSize(curSize);
        theArea.setX(curX);
        theArea.setY(curY);
  
        // resetCropHost();
        if(image!==null) {
          theArea.setImage(image);
        }
  
        drawScene();
      };
  
      /* Life Cycle begins */
  
      // Init Context var
      ctx = elCanvas[0].getContext('2d');
  
      // Init CropArea
      theArea = new CropAreaCircle(ctx, events);
  
      // Init Mouse Event Listeners
      $document.on('mousemove',onMouseMove);
      elCanvas.on('mousedown',onMouseDown);
      $document.on('mouseup',onMouseUp);
  
      // Init Touch Event Listeners
      $document.on('touchmove',onMouseMove);
      elCanvas.on('touchstart',onMouseDown);
      $document.on('touchend',onMouseUp);
  
      // CropHost Destructor
      this.destroy=function() {
        $document.off('mousemove',onMouseMove);
        elCanvas.off('mousedown',onMouseDown);
        $document.off('mouseup',onMouseMove);
  
        $document.off('touchmove',onMouseMove);
        elCanvas.off('touchstart',onMouseDown);
        $document.off('touchend',onMouseMove);
  
        elCanvas.remove();
      };
    };
  
  }]);
  
  
  crop.factory('cropPubSub', [function() {
    return function() {
      var events = {};
      // Subscribe
      this.on = function(names, handler) {
        names.split(' ').forEach(function(name) {
          if (!events[name]) {
            events[name] = [];
          }
          events[name].push(handler);
        });
        return this;
      };
      // Publish
      this.trigger = function(name, args) {
        angular.forEach(events[name], function(handler) {
          handler.call(null, args);
        });
        return this;
      };
    };
  }]);
  
  crop.directive('imgCrop', ['$timeout', 'cropHost', 'cropPubSub', function($timeout, CropHost, CropPubSub) {
    return {
      restrict: 'AE',
      scope: {
        image: '=',
        resultImage: '=',
  
        changeOnFly: '=',
        areaType: '@',
        areaMinSize: '=',
        resultImageSize: '=',
        resultImageFormat: '@',
        resultImageQuality: '=',
  
        onChange: '&',
        onLoadBegin: '&',
        onLoadDone: '&',
        onLoadError: '&'
      },
      template: '<canvas></canvas>',
      controller: ['$scope', function($scope) {
        $scope.events = new CropPubSub();
      }],
      link: function(scope, element/*, attrs*/) {
        // Init Events Manager
        var events = scope.events;
  
        // Init Crop Host
        var cropHost=new CropHost(element.find('canvas'), {}, events);
  
        // Store Result Image to check if it's changed
        var storedResultImage;
  
        var updateResultImage=function(scope) {
          var resultImage=cropHost.getResultImageDataURI();
          if(storedResultImage!==resultImage) {
            storedResultImage=resultImage;
            if(angular.isDefined(scope.resultImage)) {
              scope.resultImage=resultImage;
            }
            scope.onChange({$dataURI: scope.resultImage});
          }
        };
  
        // Wrapper to safely exec functions within $apply on a running $digest cycle
        var fnSafeApply=function(fn) {
          return function(){
            $timeout(function(){
              scope.$apply(function(scope){
                fn(scope);
              });
            });
          };
        };
  
        // Setup CropHost Event Handlers
        events
          .on('load-start', fnSafeApply(function(scope){
            scope.onLoadBegin({});
          }))
          .on('load-done', fnSafeApply(function(scope){
            scope.onLoadDone({});
          }))
          .on('load-error', fnSafeApply(function(scope){
            scope.onLoadError({});
          }))
          .on('area-move area-resize', fnSafeApply(function(scope){
            if(!!scope.changeOnFly) {
              updateResultImage(scope);
            }
          }))
          .on('area-move-end area-resize-end image-updated', fnSafeApply(function(scope){
            updateResultImage(scope);
          }));
  
        // Sync CropHost with Directive's options
        scope.$watch('image',function(){
          cropHost.setNewImageSource(scope.image);
        });
        scope.$watch('areaType',function(){
          cropHost.setAreaType(scope.areaType);
          updateResultImage(scope);
        });
        scope.$watch('areaMinSize',function(){
          cropHost.setAreaMinSize(scope.areaMinSize);
          updateResultImage(scope);
        });
        scope.$watch('resultImageSize',function(){
          cropHost.setResultImageSize(scope.resultImageSize);
          updateResultImage(scope);
        });
        scope.$watch('resultImageFormat',function(){
          cropHost.setResultImageFormat(scope.resultImageFormat);
          updateResultImage(scope);
        });
        scope.$watch('resultImageQuality',function(){
          cropHost.setResultImageQuality(scope.resultImageQuality);
          updateResultImage(scope);
        });
  
        // Update CropHost dimensions when the directive element is resized
        scope.$watch(
          function () {
            return [element[0].clientWidth, element[0].clientHeight];
          },
          function (value) {
            cropHost.setMaxDimensions(value[0],value[1]);
            updateResultImage(scope);
          },
          true
        );
  
        // Destroy CropHost Instance when the directive is destroying
        scope.$on('$destroy', function(){
            cropHost.destroy();
        });
      }
    };
  }]);
  }());